My contact at Bianchi is stumped too. He will look around a bit but I doubt we will get to the bottom of this.
Are the dropouts Campagnolo?
Is there any markings on the fork ends? is the fork steel? Are there actual bosses for the bottle cage? What do they look like? Would you be willing to remove the fork and see if there is anything on the steerer tube?
I think I have an answer. I overlooked something when I trying to figure out the SLX thing.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk